40in #3 Line -4 Str/ -4 90 Deg

The 40in #3 Line -4 Str/ -4 90 Deg brake hose is a critical hard-line assembly designed for high-performance fuel, oil, and coolant systems in custom engine builds and modified vehicles. Whether you're fabricating a custom frame chassis, swapping a big-block engine, or upgrading your fuel delivery system, this 40-inch hose bridges components with precision fittings at both ends—a straight -4 AN inlet and a 90-degree -4 AN outlet. Professional engine builders and fabricators rely on these modular hard lines to maintain clean plumbing layouts while handling the flow rates and pressures demanded by forced induction, turbocharged, and high-displacement applications.

Constructed with durable materials and engineered to withstand sustained pressure cycles, the 40in #3 Line features two -4 AN jic fittings—one straight and one 90-degree elbow—allowing you to route fluid lines around engine bay obstacles without compromising flow integrity or introducing weak points. The #3 designation refers to the hose's internal diameter category, ensuring compatibility with -4 AN standard fittings common in motorsport plumbing. At just 0.25 lbs and compact in profile, this hard line minimizes weight while maintaining rigidity, preventing vibration-induced fatigue failures that plague flexible hoses in high-rpm environments. The 90-degree bend simplifies chassis layout and reduces fitting count, lowering your overall system complexity and potential leak points.

Engine builders, fabricators, and performance enthusiasts tackling fuel system upgrades, oil cooler installations, or coolant circulation mods will find this 40-inch assembly ideal for tightly packaged engine compartments. The straight-to-90-degree configuration is particularly useful when transitioning from one plane to another—dropping fuel lines from a roof-mounted tank, rerouting coolant around a turbo manifold, or adapting oil return lines in transverse engine swaps. Verify that your AN fitting ports and hose routing accommodate a 40-inch run length before ordering; custom lengths may be required for extremely compact builds. This hard line performs reliably in street cars, track vehicles, and drag-racing platforms where system pressure stability and repeatability matter.